Minspar 200, Substitute for Kona F-4 Feldspar, FreeShip.

Minspar 200, Substitute for Kona F-4 Feldspar, FreeShip.

$7.75
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Feldspars are common minerals in rocks, making up around 41% of the Earth's crust. There are many types and subtypes of feldspar. The supplier of this one doesn't specify the mesh, but it's probably around 200.  This is a "soda spar", widely used in ceramics for both clay bodies and glazes. This specific sodium feldspar is listed in the Digital Fire ceramics resource as:  "A 200 mesh flotation-grade soda feldspar from Spruce Pine, NC. Used in the ceramic whiteware industry for sanitary ware, dinnerware, floor and wall tile, artware and glazes. Formerly called NC-4 Feldspar. Very similar chemistry to the no-longer-available F-4 feldspar."...(see more)  

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